package cn.edu.njpi.bio;

import java.io.IOException;
import java.io.InputStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

/**
 * @author 朱宗辉
 * @version V1.0
 * @Package cn.edu.njpi.bio
 * @date 2022/5/23 1:58 PM
 */
public class BIOServer {
    public static void main(String[] args) throws IOException {
        // 1. 创建一个线程池
        // 2. 如果有客户端连接，就创建一个线程，通讯（单独写一个方法）
        ExecutorService executorService = Executors.newCachedThreadPool();
        ServerSocket serverSocket = new ServerSocket(6666);
        System.out.println("服务器启动了！");
        while (true) {
            // 监听，等待客户端连接
            final Socket socket = serverSocket.accept();
            System.out.println("连接到一个客户端了");
            executorService.execute(() -> {
                // 可以和客户端通讯
                handler(socket);
            });
        }
    }

    // 编写一个handler方法，和客户端通讯
    public static void handler(Socket socket) {
        try {
            System.out.println("线程信息 id = " + Thread.currentThread().getName());
            byte[] bytes = new byte[1024];
            InputStream inputStream = socket.getInputStream();
            // 循环的读取客户端发送的数据
            while (true) {
                int read = inputStream.read(bytes);
                if (read != -1) {
                    System.out.println(new String(bytes, 0, read)); // 输出客户端发送的数据
                } else {
                    break;
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            System.out.println("关闭和client的连接");
            try {
                socket.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

    }
}
